NOTE: THIS POST AND LINK HAVE BEEN EDITED TO REFLECT THE CHANGE FROM 4.3 TO 4.3B:
There's a bug in Firmware Updater 4.3 when patching the System Menu from USA and JAP firmwares, so the homebrew channels get removed after the update. Firmware Updater 4.3b fixes the bug so USA and JAP users can use it now with no worries. If you are a PAL user and you already used Firmware Updater 4.3 you do NOT have to use this one.

[ DISCLAIMER ]:

- THIS APPLICATION COMES WITH NO WARRANTY AT ALL, NEITHER EXPRESS NOR IMPLIED.
I DO NOT TAKE ANY RESPONSIBILITY FOR ANY DAMAGE IN YOUR WII CONSOLE
BECAUSE OF A IMPROPER USAGE OF THIS SOFTWARE.

[ DESCRIPTION ]:

- This application allows you to update your console's firmware by installing the
most important available updates (IOS, System Menu, new channels...).

The application will avoid the installation of any non-desired applications and
do an optional patching to add some new features (eg: Trucha bug).

- Run the application using any method to load homebrew.
- Select the IOS version to use for the update (IOS249 recommended if available).
- Select the preferred installation method.
- Select if the IOS and the System Menu patching should be done (NO by default).

Me, either --- however, that being said, it's nice to know it's available (how many times a day do we tell newbies games are IOS-dependent, rather than system dependent). He released a 4.2 just like this, and probably a 4.1 so at least consistency and a method to safely update --- for whatever mystifying reason a user might have.